Recruitment email deliverability issues are usually caused by poor domain reputation, low engagement, and inconsistent sending behaviour, not just technical setup. Agencies are currently split between high-volume mass mailing using multiple domains and reputation-led outreach focused on inbox placement and response quality. The most sustainable results come from improving targeting, message relevance, and domain trust rather than increasing volume.
The moment that summed it up
Two days at the Recruitment Agency Expo.Dozens of conversations with agency owners, ops leaders, and rec tech providers. And one clear shift:
The noise has dropped.
No big AI promises. No “this changes everything”. Just people trying to get consistent results from what they already have. And that’s where email came back into focus.
Why recruitment email deliverability is still a problem
Every conversation around outreach eventually turned to these sticking points:
“Our open rates look off.”
“Reply rates have dropped.”
“We don’t know what’s landing anymore.”
This isn’t new. But it is getting more visible.
Deliverability (in plain English)
Deliverability: your ability to land in the inbox instead of spam.
Open rate: the percentage of recipients who open your email (increasingly unreliable due to privacy changes).
Reply rate: the percentage of recipients who respond (a far stronger signal).
Domain reputation: how email providers (Google, Microsoft, etc.) judge your sending behaviour over time.
Why it matters
If your emails don’t land, your open rates become meaningless, your reply rates collapse and your outreach tools look broken (they’re usually not).
The real cause (it’s not just your tools)
Most recruitment agencies assume “we need a better outreach tool”. But the underlying issues are usually:
- Poor list quality (broad, unqualified data)
- Low engagement signals (ignored emails)
- Overuse of tracking links and redirects
- Inconsistent sending patterns
- Fragmented domain setup
Or more simply, you’re sending emails people don’t care about, in a way that looks risky to filters.
Two outreach models dominating recruitment right now
This came up repeatedly at the Expo.
1) Mass mail / multi-domain approach
Common setup:
- 30–50+ domains
- Automation and AI sending tools
- AI-generated messaging
- Text only content
- High daily volume
Goal: Start conversations at scale.
What works:
- Short-term reply spikes
- Fast pipeline generation
Watch-outs:
- Domain burnout
- Poor long-term sender reputation
- Increasing spam filtering
- No brand recognition
- Low engagement rates
2) Reputation-led outreach
Common setup:
- Primary domain (secondary domain in the wings, just in case)
- Proper DNS configuration (SPF, DKIM, DMARC)
- Gradual, consistent sending
- Highly targeted messaging
- Domain and brand reputation focus
Goal: Consistent inbox placement and quality replies.
What works:
- Stable deliverability
- Higher-quality conversations
- Brand building and recognition over time
Watch-outs:
- Slower initial ramp
- Requires better messaging discipline
The trade-off (most people avoid saying this)
Both approaches can generate replies. But they solve different problems:
- Mass mail = speed
- Reputation = sustainability
The mistake is trying to do both at the same time. Badly.
Reality check: what your prospects actually see
I asked a group of senior leaders: “What do most recruitment emails look like?”
The answer? Generic, low effort, obviously automated, feels like spam, deleted instantly
Then I asked: “What would you actually respond to?”
“A reputable looking recruiter who clearly understands a problem we’re dealing with and shows how they can help.”
That’s it. No tool fixes that.
Why your open rates are misleading
Open rates are increasingly unreliable due to:
- Email service providers “Privacy Protection”
- Image pre-loading being unpredictable
- Tracking pixel blocking
Better metric:
👉 Reply rate
👉 Positive reply rate (actual interest, not “ooh, a 3% reply rate but most of that was telling me to go away)
What to do (step-by-step)
If you only do one thing today, review your last campaign and ask: Would I reply to this?
Step 1: Fix your technical foundation
Check:
- SPF record is valid
- DKIM is configured correctly (1024/2048-bit keys)
- DMARC policy is aligned
Step 2: Simplify your emails
- Only necessary links, preferably pointing back to your website (especially tracking redirects)
- Avoid link shorteners
- Keep formatting clean
Step 3: Improve targeting
- Better qualified, targeted lists
- More relevant segmentation
- Clear reason for contact
Step 4: Rewrite your message
Lead with a real problem, a specific observation or a relevant angle
Not your company, your services, or a generic pitch
Step 5: Stabilise sending behaviour
- Avoid sudden volume spikes
- Keep sending consistent
- Don’t rotate domains unnecessarily
The bigger shift in recruitment outreach
The winners in industry are moving away from tool obsession, volume-first thinking and shortcut tactics
And towards reputation, relevance and consistency
The question that actually matters
Not: “Which outreach tool should we use?”
But: “Why would someone reply to this email?”
Answer that properly and your deliverability improves with it.
Next step
If your open rates feel unreliable, reply rates are inconsistent, or you’re not sure what’s landing. We can run a quick deliverability audit. Clear answers. No jargon. No guesswork. Book your call today.
